Application of social cognitive theory in weight management: Time for a biological component?

Psychological intervention based on social cognitive theory: Treating pain, anxiety, and depression in perioperative patients

BACKGROUND

Surgery is an effective method for treating certain diseases. Factors such as disease, preoperative fear and tension, surgical stress, postoperative pain, and related complications directly affect the smooth progression and outcome of surgery. Patients may experience a series of psychological and physiological changes during the perioperative period, resulting in anxiety and depression, which may reduce the pain threshold and worsen their prognosis.

AIM

To investigate the effects of a psychological intervention among perioperative patients, based on social cognitive theory (SCT).

METHODS

We enrolled 200 patients who underwent surgical care at The First People's Hospital of Lin'an District, Hangzhou between January and December 2023. They were categorized into a routine intervention group (n = 103) and a psychological intervention group (n = 97), based on the intervention strategies used. Various assessment tools, including the self-rating anxiety scale (SAS), the self-rating depression scale (SDS), and the Connor-Davidson Resilience scale, were used to measure patients' negative states and emotions. The pre- and post-intervention scores for these metrics in the two groups were then analyzed.

RESULTS

In the psychological intervention group, the SAS and SDS scores (31.56 ± 5.18 and 31.46 ± 4.57, respectively) were significantly reduced compared to the routine intervention group (P < 0.05). The visual analog scale pain scores at 12 and 24 hours after intervention (6.85 ± 1.21, 4.24 ± 0.72) were notably higher than those in the routine intervention group (P < 0.05). The psychological intervention group also demonstrated superior scores in perseverance (36.08 ± 3.29), self-reliance (22.63 ± 2.91), optimism (11.42 ± 1.98), and resilience (70.13 ± 5.37), compared to the routine intervention group (P < 0.05). Additionally, the psychological intervention group's confrontation score (23.16 ± 4.29) was higher (P < 0.05). This group also reported lower scores in avoidance (9.28 ± 1.94) and yielding (6.19 ± 1.92) (P < 0.05). Lastly, the Short Form 36 Health Survey scores were significantly higher in the psychological intervention group, indicating a better quality of life (P < 0.05).

CONCLUSION

Psychological intervention measures based on SCT can effectively alleviate pain, anxiety, and depression in perioperative patients.

Factors associated with choice of behavioural weight loss program by adults with obesity

We assessed the preference for two behavioural weight loss programs, Diabetes Prevention Program (DPP) and Healthy Weight for Living (HWL) in adults with obesity. A cross-sectional survey was fielded on the Amazon Mechanical Turk. Eligibility criteria included reporting BMI ≥30 and at least two chronic health conditions. Participants read about the programs, selected their preferred program, and answered follow-up questions. The estimated probability of choosing either program was not significantly different from .5 (N = 1005, 50.8% DPP and 49.2% HWL, p = .61). Participants' expectations about adherence, weight loss magnitude, and dropout likelihood were associated with their choice (p < .0001). Non-White participants (p = .040) and those with monthly income greater than $4999 (p = .002) were less likely to choose DPP. Participants who had postgraduate education (p = .007), did not report high serum cholesterol (p = .028), and reported not having tried losing weight before (p = .025) were more likely to choose DPP. Those who chose HWL were marginally more likely to report that being offered two different programs rather than one would likely affect their decision to enrol in one of the two (p = .052). The enrolment into DPP and HWL was balanced, but race, educational attainment, income, previous attempt to lose weight, and serum cholesterol levels had significant associations with the choice of weight loss program.

Randomized controlled trial of a novel lifestyle intervention used with or without meal replacements in work sites

OBJECTIVE

Lifestyle interventions have had limited effectiveness in work sites when evaluated in randomized trials. This study assessed the effectiveness of a novel lifestyle intervention for weight loss (Healthy Weight for Living [HWL]) implemented with or without meal replacements (MR) in work sites. HWL used a new behavioral approach emphasizing reducing hunger and building healthy food preferences, and, unlike traditional lifestyle interventions, it did not require calorie counting.

METHODS

Twelve work sites were randomized to an 18-month intervention (n = 8; randomization within work sites to HWL, HWL + MR) or 6-month wait-listed control (n = 4). Participants were employees with overweight or obesity (N = 335; age = 48 [SD 10] years; BMI = 33 [6] kg/m2 ; 83% female). HWL was group-delivered in person or by videoconference. The primary outcome was 6-month weight change; secondary outcomes included weight and cardiometabolic risk factors measured at 6, 12, and 18 months in intervention groups.

RESULTS

Mean 6-month weight change was -8.8% (95% CI: -11.2% to -6.4%) for enrollees in HWL and -8.0% (-10.4% to -5.5%) for HWL + MR (p < 0.001 for both groups vs. controls), with no difference between interventions (p = 0.40). Clinically meaningful weight loss (≥5%) was maintained at 18 months in both groups (p < 0.001).

CONCLUSIONS

A new lifestyle intervention approach, deliverable by videoconference with or without MR, supported clinically impactful weight loss in employees.

Weight Loss Strategies

Lifestyle interventions for weight loss combine support for changing diet and physical activity with weight management education and are considered the first line treatment for obesity. A variety of diet-focused interventions including time-restricted eating are also increasingly being promoted for weight management. This chapter reviews different types of interventions for weight management, their underlying health behavior change models, and effectiveness to date in randomized trials. The results justify increasing efforts to improve program effectiveness generally, and to personalize interventions to support long-term adherence. The high prevalence of obesity worldwide, combined with the known increase in risk of non-communicable diseases with duration of excess weight, provides a compelling justification for routine delivery of effective weight management interventions in the community and in clinical care.